1. School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
2. Dipartimento di Chimica, Universita′ Degli Studi di Milano, via Golgi 19, Milano 20133, Italy
3. Infection Biology Unit, German Primate Center─Leibniz Institute for Primate Research, 37077 Göttingen, Germany
4. School of Molecular and Cellular Biology and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
5. Faculty of Biology and Psychology, University of Göttingen, 37073 Göttingen, Germany
6. Building One, Granta Centre, G ranta Park, Sphere Fluidics Ltd, Great Abington, Cambridge CB21 6AL, United Kingdom
7. School of Food Science & Nutrition and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, United Kingdom